From the Introduction: The "On a Roll" RPG system is designed to be somewhat setting agnostic. Its intended "setting" is the "real" world, if time travel were a reality, as well as possibly things like aliens, laser guns, and psychic abilities. While the base system doesn't include fantasy elements like Elves and Dragons, or magic spells and talking animals, there's nothing to say an enterprising Game Master couldn't implement such elements into a campaign using these core rules.